# a = "hhh"
# b = """hhh"""
# print(a,b)
# info = '黑马程序员'
# print(info.find('白'))
# info = '黑马程序员退钱'
# print(info.replace('黑马','白马'))
# print(info)
# n = 'hello Python  itcast  itheima'
# # print(n.split())
# num = ['Python', 'Java', 'PHP']
# # print("".join(num))
# info4 = str('11,22,33,44')
# print("_".join(info4))
# list1 = list('1','2','3')
# print(list1)
# info = '('1''2'3'4'2)'
# #print(info[4])
# print(info.find(1))
# # print(info.count())
#
# va = ["Web自动化", "UI自动化", "接口自动化"]
# # va.append('手工测试')
# # print(va)
# va.insert(1,'python')
# print(va)
# info1 = [1,3,10,2,3,28,4,]
# inf02 = [9,9,9]
# # info1.extend(inf02)
# # info1.pop(0)
# # print(info1)
# # info1.remove(3)
# # # print(info1)
# # info1[2] = '黑马'
# # print(info1)
# info1.sort()
# print(info1)
# student_list = [["张三", "18", "功能测试"],['20','30','40']], ["李四", "20", "自动化测试"]
# print(student_list[0][0][1])
# num = (1,2,3)
# print(type(num))
# print(num[1])
# print(num.count(4))
num = {}
num['name'] = '张三'

num['age'] = 18

num['name'] = '李四'
# print(num)
# # print(num['aa'])
# print(num.get('ss'))
# for i in num.keys():
#     print(f'i={i}')
# for j in num.values():
#     print(f'j ={j}')
# for k,v in num.items():
#     print(f'k ={k},v= {v}')\
info = 'adjeddldd'
